312293 has 4 divisors (see below), whose sum is σ = 314880. Its totient is φ = 309708.

The previous prime is 312289. The next prime is 312311. The reversal of 312293 is 392213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312293 - 2² = 312289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103 + ... + 1356.

It is an arithmetic number, because the mean of its divisors is an integer number (78720).

2³¹²²⁹³ is an apocalyptic number.

It is an amenable number.

312293 is a deficient number, since it is larger than the sum of its proper divisors (2587).

312293 is a wasteful number, since it uses less digits than its factorization.

312293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586.

The product of its digits is 324, while the sum is 20.

The square root of 312293 is about 558.8318172760. The cubic root of 312293 is about 67.8454535200.

The spelling of 312293 in words is "three hundred twelve thousand, two hundred ninety-three".